mysql query optimisation

Posted by Bharanikumar on Stack Overflow See other posts from Stack Overflow or by Bharanikumar
Published on 2010-05-31T07:49:03Z Indexed on 2010/05/31 7:52 UTC
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mysql

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mysql-query

i have around (1,049,906 total, Query took 0.0005 sec) in my x table ,

If i simply retrieve trying to retrive the particular field records ,

Its tooks hardly 6 mins ,

This is my query

SELECT CUSTOMER_CODE FROM X_TBL ;

CUSTOMER_CODE => UNIQUE

THE ABOVE QUERY TOOK 6MIN ,

Tel me optimization tips for this ,

Also in some situation to search customer , i used the CUSTOMER_CODE in like ,

select CUSTOMER_CODE from X_TBL WHERE CUSTOMER_CODE LIKE "$KEY_WORD%"

Regards Bharanikumar

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